Improvement in sewing-machines



SPBUL MULDER.

SEwm mmm;

. PMENTEB JUN'27'1871 cuAnLEs H.w|LLcox mus ummm UNITED STATES PATE ''CHARLES E. wILLOOX, OE NEw YORK, AND cYEUs OAELETON, OE BROOKLYN,

' NEW YORK, ASSIGNORS TO THE WILLGOX & GIBBS SEWING-MACHINE COM- PANY,0F NEW YORK CITY.

IMPROVEMENT IN SEWING-MACHINES.

Specification forming part of Letters Patent No. 116,526, dated June 27,1871.

.To all 'whom t may concern:

Be it known that we, OHAELEs H. WTLLOOX, of the city, county, and Stateof New York, and CYRUs GARLETON, of Brooklyn, in the county of Kings,and State of New York, have invented certain new and useful Improvementsin Sewing-Machines, of which the following is a specification:

The invention which is the subject of this patent relates tospool-holders for sewing-machines, and is adapted more particularly tothat class Of sewing-machines where the thread is clamped firmly betweentwo surfaces until the loop is almost or quite drawn up to the cloth andthen suddenly released. But, while particularly adapted for use in thisconnection, it may also be employed with'other machines of ordinary orsuit' able construction. The objects of our invention are: First, to getrid of the noise which arises from the spool bein g j erked back andforth against the spool-pin in the operation of sewing. Second, toovercome liability of the thread falling over the end of the spool andgettin g wound around the spool-pin, in which case the tension isentirelyT too great-generally so great thatthe thread in 'the end isbroken.

To enable those skilled in the art to understand and use our invention,we will proceed to describe the manner in which the same is or may becarried into effect by reference to the accompanying drawing, in which-Figure 1 is a side elevation of so much of a sewing-machine as is neededto illustrate our inven tion. Fig. 2 is an isometric perspective view ofthat portion of a machine in which our invention is embraced. Fig. 3 isa `top view of the parts shown in Fig. l. Fig. 4 is an end view of theupper part ofthe holder or bracket for the spoolpin. Fig. 5 represents alongitudinal section of the spool-pin or spool-holding disk or plate.

The machine represented in the drawing for the purpose of illustratingthe manner in which. our invention may be carried into effect is aWillcox 8v Gribbs7 machine.

E is the frame, and F the needle-beam which vibrates upon the stud orpivot Gr. At the rear of the frame is the spool-holder, consisting ofthe spool-pin A and the disk or plate B, formed upon or attached to thefront end of the pin. The other end of the pin is intended to be ittedand held in the arm or bracket C, which is fastened to the frame E. Byreference to Fig. 5 it will be seen that the end of the pin inserted inthe holding-bracket is turned down so as to form a shoulder, I, to limitthe extent to which the pin may be inserted in the socket in the armC--the design being to have the pin long enough between the shoulder land the disk B to receive the largest spools used in connection withsuch machines. The pin can be readily fitted in or withdrawn from theholder C, and we prefer, in order to exert a spring pressure upon itwhich, While serving to it firmly in place, will, at the `same time,permit its ready withdrawal and replacement `to split `longitudinallythe upper end of the holding-arm (l by a sawcut through the pin-socket,as indicated at H, so as'to form two springjaws which will grasp tightlythe end of the pin inserted between them. The end, however, may be heldby any other suitable 'means which will allow it to be readily removed.The .thread pull-ofi*l is represented as consisting ofthe hooks a b,attached to the vibratory needle-beam, and the intermediate pin o,attached to the frame E, with its outer end fitting a curved slot in theneedle-beam.

We arrange the spool-holder so that the pin shall be in line, or nearlyso, with the pull-off, or, in other words, so that itsaxis, il'prolonged,

would meet or pass through the thread-receiving eye ofthe pull-od', ornearly so, the object of this arrangement being to allow the thread tobe drawn olf equally well from any part of the disk B without' anyjerking' or uneven motion. "We also arf range it so that the spool onthe pin will always rest by its gravity against the disk B. Thisarrangement ofthe spool-holder is fully represen ted in Figs. l, 2, and3 of the'drawing, the spool-pin being set atan angle `with ythe frameboth vertically and horizontally, its rear end being inclined upward andoutward, so that not only is it brought in line with the pull-oit' butit is also tilted or inclined in such manner that the spool it carrieswill always rest by its gravity against the disk B. The lateralinclination of the pin to the frame is, however, incidental to itsarrangement, in the present instance, on one side of the machine.spool-pin, all that is necessary is that the end to which thespool-holding diskor plate is applied Whatever may be the location ofthe contact with the plate.

` should point or be inclined toward the pull-off. or

toward any other thread-receiving eye or pin to which the thread isconducted from the spool, so that the thread may be drawn over the edgeof 'the plate or disk. The thread from the spool is,

by the action of the pull-off, uncoiled and drawn over the edge of thecircular plate or disk B. Owing to the fact that the pin is inclinedtoward the receiving-eye of the pull-off, the latter is, at

all times, practically equidistant from all parts of the circumferenceof the disk, so that the thread is drawn evenly and without jerking and,more- Y over, as the disk is greater in diameter than the spool, thethread is lifted and uncoiled from the latter with the greatest ease andfacility, and,

lunless v.it be underwound, without causing the We provide devices formsno part of this patent and requires no detailed description. Anysuitable pull-off, take-up, and tension may be used, the same beingcombined withthe frame of the machine in any appropriate manner.

The manner in which the spool-holder is used and operated is as follows:The detachable spoolholder A B is removed from the'machine and a spoolof thread, K, is slipped upon the pin, over which it should pass freely.The end of the pin -is then replaced in the holder C. vThe thread isdrawn from the spool over the edge of the disk B'into the pull-off,passing underA the movable hook a, overthe intermediate stationary pinc, and under the hook b; thence back and around the tension D, betweenits intermittently-clamping surfaces; thence lthrough the thread-eye orpin L to the take-up P and thence to the stitch-forming mechanism. Thepath of the thread is'plainly indicated in Fig. 2. When the needle-beamF,

to which the two movable pins or hooks of the pull-oif are fastened,begins to descend, the clamping surfaces of the tension D close upon thethread and hold it firmly, and, as the needle-beam continues to descend,the thread is bent over the stationary pin of the pull-off and drawnfrom the spool over the edge of the disk D by merely uncoilin g, andwithout drawing or putting in motion the-spool K, except when the threadis underwound, in which case the spool, being free to move on the pin,can be drawn around. The spool rests on the pin A in a position but veryslightly inclined-in fact, very nearly horizon tal-and there is notendency of the thread to drop over the end which rests against the diskB, especially as the flange of the disk overhangs the spool, and thethread, in pulling off, is inclined toward the center of the spool whenit uncoils from the end 'nearestthe disk. As the pull of the thread isalways toward the disk end, there is no tendency of the thread to fallover the opposite end of the spool, and as the spool' is rarely, ifever, jerked around, which, on the contrary, is always taking place insewingmachines like the Wheeler 8v Wilson machines, which employ theordinary horizontal spool-pin, perfect security against winding aroundthe spoolpin is insured.

Having described our invention and the manner inwhich the same is or maybe carried into effect, what we claim, and desire to secure by LettersPatent, isi A l. The spool-pin or spindle, so arranged that its axisshall be in line with or inclined toward the thread-receiving eye, asdescribed, in combination with a disk or other device for holding thespool thereon, substantially as and for the purposes' set forth.

2. The inclined spool-pin arranged as specified in the preceding clause,in combination with a bracket or other suitable holder, in which the pinvis held at one end, substantially in the manner a spool-holding plateor disk provided withan` Vannular ange, arranged, substantially asdescribed, to overhang the end of the4 spool in contact with the diskand prevent the thread from winding upon the spool-pin.

5. The combination, with the herein-described spool-holding device, of atension pull-off and take-up, under the arrangement and for operation asshown and set forth. 4

In testimony whereof we have signed ournames to this specificationbefore two subscribing witnesses.

CEAS. H. WILLGOX.

witnesses: cYnUs oAnLEToN.

Trino. A. TAYLOR, HENRY L. BEssEY.

